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Highland, Ohio
Inside Highland's city limits, a shallow water table limits basements on 67% of mapped land, the 3rd-highest of 7 cities in Highland County. Shrink-swell clay limits houses without basements on 1%, the 4th-highest of 7 cities in Highland County.
That water-table share is close to Highland County's 66%. FEMA's flood data list no flood losses since 2016 in the 2 ZIP codes overlapping the city.
Data as of October 13, 2026 · sources · in Highland County
expansive clay: shrink-swell limits slab homes
high water table: limits basements
flood losses since 2016 in 2 overlapping ZIPs
Basement waterproofing in Highland
Basement waterproofing in Highland: a shallow water table limits basements on 67% of Highland's mapped land, more than in 52% of Ohio cities.
Soil under Highland city limits
| Expansive clay (limits slab homes) | 0.6% |
| High water table (limits basements) | 67.1% |
| Septic fields very limited | 82.2% |
| Clay swell (LEP, by area) | 4.0% |
| High-swell land (LEP 6%+) | 0.0% |
| Urban land, not rated | 11.8% |
| Mapped soil | 107 acres |
What the numbers mean here
On 67% of Highland's mapped land, soil stays saturated within about 6 feet of the surface for part of the year, which is basement depth.
USDA rates 82% of the land very limited for septic absorption fields.
Drought in Highland County
0% of Highland County is in drought (D1 or worse) on the October 13, 2026 map. County detail.
Flood losses by ZIP code
FEMA flood records since 2016 in the ZIP codes that overlap Highland. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 45132 | 87% | 0 | $0 |
| 45135 | 13% | 0 | $0 |
Homes
Highland has fewer than 100 housing units in the ACS 2020-2024 estimates, too few for reliable shares.
Nearby cities
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| Leesburg | 3 mi | 2% | 61% |
| New Vienna | 5 mi | 10% | 73% |
| Hillsboro | 9 mi | under 1% | 40% |
| Sabina | 10 mi | 39% | 98% |
| Greenfield | 11 mi | 1% | 53% |
| Martinsville | 11 mi | 5% | 79% |
| Lynchburg | 12 mi | 1% | 69% |
| Wilmington | 13 mi | 15% | 93% |
Sources: USDA SSURGO (August 5, 2026) · US Drought Monitor (October 13, 2026) · FEMA NFIP v3 (September 9, 2026). Methods · Data status